Inhalt Vorwort 9 1 »Free« kommt auf die Welt 15 Was bedeutet »Free« eigentlich? ...

This paper investigates the upcoming business model of online streaming services allowing music consumers either to subscribe to a service which provides free-of-charge access to streaming music and which is funded by advertising, or to pay a monthly flat fee in order to get ad-free access to...

Automated Teller Machines (ATMs) play a crucial role in retail banking as they represent the primary cash access points for customers. However, the ongoing digitalization of retail payments has put pressure on the ATM industry, raising concerns about its sustainability. We describe the main...

Fifth-generation district heating and cooling (5GDHC) is one of the latest trends in the energy transition of the heating sector. These networks are characterized by low temperature levels of 5–40 °C, and they use distributed heat pumps and compression chillers to obtain the required...

This paper investigates the upcoming business model of online streaming services allowing music consumers either to subscribe to a service which provides free-of-charge access to streaming music and which is funded by advertising, or to pay a monthly flat fee in order to get ad-free access to...